Left without any siblings and ignored by its biological mother, the white tiger cub in Delhi Zoo needs urgently a foster mother. And zoo authorities are now looking for a pregnant female dog who can give milk to the tiger cub after she delivers puppies. The bizarre situation arose after five of the six while tiger cubs born in the zoo last week died one after the other after the mother tigress refused to feed or nurse for them. The zoo authorities have apparently found one such female dog that can help save the cub being treated at a veterinary hospital. The zoo curator told The Hindu that the cub was the firstborn and initially received care from its seven-year-old mother. But after its siblings died, the mother refused to feed the last surviving cub. Now, hopes are pinned on this female dog and its owner.